| Patents for H01Q 25 - Aerials or aerial systems providing at least two radiating patterns (4,128) |
|---|
| 11/02/1976 | US3990077 Electrically scanned antenna for direction error measurement |
| 10/26/1976 | US3988736 Steerable feed for toroidal antennas |
| 10/26/1976 | US3988732 3-Channel selectable polarization, target discrimination antenna |
| 10/19/1976 | US3987451 Beam type planar array antenna system |
| 10/19/1976 | US3987444 Interference rejection system for multi-beam antenna having single control loop |
| 10/05/1976 | US3984840 Bootlace lens having two plane surfaces |
| 09/28/1976 | US3983562 Mono-lobed scanner |
| 09/28/1976 | US3983561 High frequency wave radiation system producing a rotating beam defining a predetermined geometrical pattern |
| 09/14/1976 | US3981014 Interference rejection system for multi-beam antenna |
| 09/07/1976 | US3979754 Radio frequency array antenna employing stacked parallel plate lenses |
| 08/10/1976 | US3974462 Stripline load for airborne antenna system |
| 07/20/1976 | US3971026 Multiple beam glide slope radio navigation method with two classes of beams |
| 07/20/1976 | US3971022 Phased-array antenna employing an electrically controlled lens |
| 07/13/1976 | US3969729 Network-fed phased array antenna system with intrinsic RF phase shift capability |
| 06/22/1976 | US3965475 Switchable beamwidth monopulse method and system |
| 06/15/1976 | US3964070 Corrugated horn having means for extracting divergence-measuring modes |
| 04/27/1976 | US3953858 Multiple beam microwave apparatus |
| 04/27/1976 | US3953131 Opto-electronic antenna system for lasers |
| 04/13/1976 | US3950754 Method of transmitting glide slope navigation signals for aircraft |
| 04/06/1976 | USRE28762 Radio navigational aid with separate standard frequency signal |
| 04/06/1976 | US3949400 Position determination systems |
| 03/09/1976 | US3943523 Airborne multi-mode radiating and receiving system |
| 02/24/1976 | US3940770 Cylindrical array antenna with radial line power divider |
| 02/10/1976 | US3938162 Variable beamwidth antenna |
| 02/10/1976 | US3938157 Rotatable radar antenna feed and receiver horn |
| 02/03/1976 | US3936838 Multimode coupling system including a funnel-shaped multimode coupler |
| 02/03/1976 | US3936835 Directive disk feed system |
| 01/06/1976 | US3931624 Antenna array for aircraft guidance system |